<template>
  <div>
        <!-- 面包屑导航区域 -->
       <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card>
            <el-row :gutter="20" class="adTop">
                <el-col :span=" 8">
                    <el-input placeholder="请输入内容" v-model="queryinfo.query" clearable @clear='getGoodList'>
                        <el-button slot="append" icon="el-icon-search" @click="getGoodList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddPage">添加商品</el-button>
                </el-col>
            </el-row>

            <el-table :data='goodsList' border stripe>
                <el-table-column label='#' type='index'></el-table-column>
                <el-table-column label='商品名称' prop='goods_name'></el-table-column>
                <el-table-column label='商品价格(元)' prop='goods_price' width="120px"></el-table-column>
                <el-table-column label='商品重量' prop='goods_weight' width="120px"></el-table-column>
                <el-table-column label='创建时间' prop='add_time'>
                    <template slot-scope="scope">
                            {{ scope.row.add_time | dateFormat}}
                    </template>
                </el-table-column>
                <el-table-column label='操作' width="200px">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)">删除</el-button>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
             <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryinfo.pagenum"
                :page-sizes="[5, 10, 15, 20]"
                :page-size="queryinfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total" background>
            </el-pagination>
        </el-card>
  </div>
</template>

<script>
export default {
  data () {
    return {
      goodsList: [], // 商品数组
      queryinfo: { // 查询参数对象
        query: '', // 和input值绑定
        pagenum: 1,
        pagesize: 5
      },
      total: 0 // 总的商品数量
    }
  },
  created () {
    this.getGoodList()
  },
  methods: {
    // 获取商品数据列表
    async getGoodList () {
      const { data: res } = await this.$http.get('/goods', {
        params: this.queryinfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败!')
      }
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    // 获取每页显示多少条
    handleSizeChange (newSize) {
      this.queryinfo.pagesize = newSize
      this.getGoodList()
    },
    // 当前是第几页
    handleCurrentChange (newPage) {
      this.queryinfo.pagenum = newPage
      this.getGoodList()
    },
    // 删除商品
    async removeById (id) {
      const result = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (result !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`/goods/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除成功')
      }
      this.$message.success('删除商品成功!')
      this.getGoodList()
    },
    // 跳转到添加商品页面
    goAddPage () {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>
   .adTop{
       margin: 15px;
   }
</style>
